Improvement in cultivators



GILBERT 8L WESTON.

Cultivator.

No. 29,876 Patented Sept. 4,- 1860,

Wlgneov ea Q9 W A z W7 N-FETERS, P flTfl-LmiOGRAPHER. WASHINGTON. D C.

UNITED STATES PATENT OFFICE.

JAMES R. GILBERT, OF STARKVILLE, AND STEPHEN R. W'ESTON, OF

I DAWSON, GEORGIA.

IMPROVEMENT IN CULTIVATORS.

Specification forming part of Letters Patent No. 29,876, dated September 4, 1860.

To all whom it may concern:

Be it known that we, JAMES 1t. GILBERT, of Starkville, in Lee county, and STEPHEN It. WESTON, of Dawson, in Terrell county, both in the State of Georgia, have invented certain new and useful Improvements in Cultivator-Flows; and we do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same,.reference being bad to the accompanying drawings, in which Figure 1 represents a perspective view of said cultivator-plow. Fig. 2 represents adetached View, hereinafter to be referred to.

Our invention relates to the particular arrangement of the parts which constitute the plow, by which we are enabled to change it from a double adjustable cultivator-plow to a sin gle-b eam plow, and vice versa.

To enable others skilled in the art to make and use our invention, we will proceed to describe its construction and operation.

The two plow-beams A and A are hinged together at their front ends by means of the link B, which also serves as aclevis, and have free play independent of each other on said hinge. They are connected to each other near their rear ends by means of a screw-shaft, D, which has right and left screw-threads cut on its ends, the latter passing through stationary screw-nuts O in the plow-beams. The screwshaft D, which has a square projection, a, on its center part, upon being turned spreads or contracts the plow-beams, they turning on their hinge at the front end.

The plow stocks or standards E and G are hinged to their respective beams by means of the bolts 1) 0, so as to swing on said bolts. They are of the shape representedin the drawings. The pivoted curved braces F and H, which arehinged to the beams by means of the bolts 70 and m, pass through their slots 01, and afford the means of adj usting the position of the plow stocks or standards by having open curved slots 2' cut on their lower sides,

dles M M of the plow are secured at their front ends to the beams A by means of the bolts k and p, while their rear ends are fastened to the bar L by means of the screws g, which pass through the slotted plates N, and which thus serve to spread or contract the rear ends of the handles to make them conform to the spreading of the beams.

WVhen thisplow is to be changed from adouble adjustable cultivator-plow to a single-beam plow the screw-nuts r of the link or clevis Bare unscrewed. The screw-shaft D is then turned until it is detached from the plow-beams, and if the beam A is to be used the handle M is secured to it by withdrawing the bolt 1), and by then securing both handles to the beam A by means of the bolt k. The positionof the standards K is then so changed as that they may straddle the beam A, and they are then secured to the beam by means of the bolt 12. Finally the rear ends of the handles are contracted by adjusting the plates N, and the single plow is now ready 'for use. The beam A may now also be used for a separate plow by securing thereto'a pair of spare handles. (lllustrated in Fig. 2.) The construction and ar rangement of these handles and their attachments to the beam are similar to those illustrated on Fig. 1, with the only difference that their rear ends are connected rigidly to the cross-bar L, as they need not be adjustable, being intended for a single-beam plow only.

When the beam A is to be secured to the spare handles the curved brace H is removed from the bolt m and the stock G from the bolt 0.. The former is then secured to the beam by the boltp and the latter by the bolt m,

and they are now in similar positions" in regard to the beam A as the brace F and stock E are in the beam A.

Having thus fully described the nature of our invention, what we claim as new in the construction of cultivator-plows, and desire to secure by Letters Patent, is- 

